Disclosed is a method of processing an object in an image and a system for the same. According to an embodiment of the present disclosure, there is provided a method of processing an object in an image, the method including: detecting a first object from a first image obtained by a first network camera; detecting a second object from a second image obtained by a second network camera; checking similarity between the first and second objects in consideration of feature information of the first and second objects, installation location information of the first and second network cameras, and location information of a terminal device; and determining whether the first object is equal to the second object on the basis of the similarity between the first and second objects.